Crystal growth for different substrate orientations during laser directed solidification of single crystal superalloys

Jiawei Wang; Huaming Wang; Hongwei Gao; Junwei Yang; Meiling Zhang; Xu Cheng; Shuquan Zhang; Dong Liu

doi:10.1016/j.jallcom.2023.170219

Crystal growth for different substrate orientations during laser directed solidification of single crystal superalloys

Jiawei Wang
, Huaming Wang
, Hongwei Gao
, Junwei Yang
, Meiling Zhang
, Xu Cheng
, Shuquan Zhang
, Dong Liu

Research output: Contribution to journal › Letter › peer-review

7 Scopus citations

Abstract

Controlling the grain structure while avoiding the stray grain (SG) formation is the key to fabricate the nickel-based single crystal (SX) superalloy components during laser additive manufacturing. In this study, a new approach is developed to inhibit SG formation by the selection of optimizing the substrate crystallographic orientation. Besides, a numerical model of combined substrate orientation with the tendency of equiaxed grain formation during epitaxial growth processing is developed to predict the SG formation in the molten pool. Combining the results from both experiments and simulations, results indicate that (001)/[110] and (013)/[100] substrate orientation could suppress the formation of SGs effectively.

Original language	English
Article number	170219
Journal	Journal of Alloys and Compounds
Volume	957
DOIs	https://doi.org/10.1016/j.jallcom.2023.170219
State	Published - 25 Sep 2023
Externally published	Yes

Keywords

Directed energy deposition
Directed solidification
Laser processing
Single crystal

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10.1016/j.jallcom.2023.170219

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title = "Crystal growth for different substrate orientations during laser directed solidification of single crystal superalloys",

abstract = "Controlling the grain structure while avoiding the stray grain (SG) formation is the key to fabricate the nickel-based single crystal (SX) superalloy components during laser additive manufacturing. In this study, a new approach is developed to inhibit SG formation by the selection of optimizing the substrate crystallographic orientation. Besides, a numerical model of combined substrate orientation with the tendency of equiaxed grain formation during epitaxial growth processing is developed to predict the SG formation in the molten pool. Combining the results from both experiments and simulations, results indicate that (001)/[110] and (013)/[100] substrate orientation could suppress the formation of SGs effectively.",

keywords = "Directed energy deposition, Directed solidification, Laser processing, Single crystal",

author = "Jiawei Wang and Huaming Wang and Hongwei Gao and Junwei Yang and Meiling Zhang and Xu Cheng and Shuquan Zhang and Dong Liu",

note = "Publisher Copyright: {\textcopyright} 2023",

year = "2023",

month = sep,

day = "25",

doi = "10.1016/j.jallcom.2023.170219",

language = "英语",

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journal = "Journal of Alloys and Compounds",

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TY - JOUR

T1 - Crystal growth for different substrate orientations during laser directed solidification of single crystal superalloys

AU - Wang, Jiawei

AU - Wang, Huaming

AU - Gao, Hongwei

AU - Yang, Junwei

AU - Zhang, Meiling

AU - Cheng, Xu

AU - Zhang, Shuquan

AU - Liu, Dong

PY - 2023/9/25

Y1 - 2023/9/25

N2 - Controlling the grain structure while avoiding the stray grain (SG) formation is the key to fabricate the nickel-based single crystal (SX) superalloy components during laser additive manufacturing. In this study, a new approach is developed to inhibit SG formation by the selection of optimizing the substrate crystallographic orientation. Besides, a numerical model of combined substrate orientation with the tendency of equiaxed grain formation during epitaxial growth processing is developed to predict the SG formation in the molten pool. Combining the results from both experiments and simulations, results indicate that (001)/[110] and (013)/[100] substrate orientation could suppress the formation of SGs effectively.

AB - Controlling the grain structure while avoiding the stray grain (SG) formation is the key to fabricate the nickel-based single crystal (SX) superalloy components during laser additive manufacturing. In this study, a new approach is developed to inhibit SG formation by the selection of optimizing the substrate crystallographic orientation. Besides, a numerical model of combined substrate orientation with the tendency of equiaxed grain formation during epitaxial growth processing is developed to predict the SG formation in the molten pool. Combining the results from both experiments and simulations, results indicate that (001)/[110] and (013)/[100] substrate orientation could suppress the formation of SGs effectively.

KW - Directed energy deposition

KW - Directed solidification

KW - Laser processing

KW - Single crystal

UR - https://www.scopus.com/pages/publications/85156121816

U2 - 10.1016/j.jallcom.2023.170219

DO - 10.1016/j.jallcom.2023.170219

M3 - 快报

AN - SCOPUS:85156121816

SN - 0925-8388

VL - 957

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

M1 - 170219

ER -

Crystal growth for different substrate orientations during laser directed solidification of single crystal superalloys

Abstract

Keywords

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